diff --git a/docs/DISCOVERABLE_PARTITIONS.md b/docs/DISCOVERABLE_PARTITIONS.md
index 122cc069539..90cf43f094c 100644
--- a/docs/DISCOVERABLE_PARTITIONS.md
+++ b/docs/DISCOVERABLE_PARTITIONS.md
@@ -93,8 +93,8 @@ boot loader communicates this information to the OS, by implementing the
 | _Root Verity Partition (32-bit PowerPC)_ | `98cfe649-1588-46dc-b2f0-add147424925` | ditto | ditto |
 | _Root Verity Partition (RISC-V 32-bit)_ | `ae0253be-1167-4007-ac68-43926c14c5de` | ditto | ditto |
 | _Root Verity Partition (RISC-V 64-bit)_ | `b6ed5582-440b-4209-b8da-5ff7c419ea3d` | ditto | ditto |
-| _Root Verity Partition (s390x)_ | `b325bfbe-c7be-4ab8-8357-139e652d2f6b` | ditto | ditto |
 | _Root Verity Partition (s390)_ | `7ac63b47-b25c-463b-8df8-b4a94e6c90e1` | ditto | ditto |
+| _Root Verity Partition (s390x)_ | `b325bfbe-c7be-4ab8-8357-139e652d2f6b` | ditto | ditto |
 | _Root Verity Partition (TILE-Gx)_ | `966061ec-28e4-4b2e-b4a5-1f0a825a1d84` | ditto | ditto |
 | _Root Verity Partition (amd64/x86_64)_ | `2c7357ed-ebd2-46d9-aec1-23d437ec2bf5` | ditto | ditto |
 | _Root Verity Partition (x86)_ | `d13c5d3b-b5d1-422a-b29f-9454fdc89d76` | ditto | ditto |
@@ -112,8 +112,8 @@ boot loader communicates this information to the OS, by implementing the
 | _`/usr/` Verity Partition (32-bit PowerPC)_ | `df765d00-270e-49e5-bc75-f47bb2118b09` | ditto | ditto |
 | _`/usr/` Verity Partition (RISC-V 32-bit)_ | `cb1ee4e3-8cd0-4136-a0a4-aa61a32e8730` | ditto | ditto |
 | _`/usr/` Verity Partition (RISC-V 64-bit)_ | `8f1056be-9b05-47c4-81d6-be53128e5b54` | ditto | ditto |
-| _`/usr/` Verity Partition (s390x)_ | `31741cc4-1a2a-4111-a581-e00b447d2d06` | ditto | ditto |
 | _`/usr/` Verity Partition (s390)_ | `b663c618-e7bc-4d6d-90aa-11b756bb1797` | ditto | ditto |
+| _`/usr/` Verity Partition (s390x)_ | `31741cc4-1a2a-4111-a581-e00b447d2d06` | ditto | ditto |
 | _`/usr/` Verity Partition (TILE-Gx)_ | `2fb4bf56-07fa-42da-8132-6b139f2026ae` | ditto | ditto |
 | _`/usr/` Verity Partition (amd64/x86_64)_ | `77ff5f63-e7b6-4633-acf4-1565b864c0e6` | ditto | ditto |
 | _`/usr/` Verity Partition (x86)_ | `8f461b0d-14ee-4e81-9aa9-049b6fb97abd` | ditto | ditto |
@@ -131,8 +131,8 @@ boot loader communicates this information to the OS, by implementing the
 | _Root Verity Signature Partition (32-bit PowerPC)_ | `1b31b5aa-add9-463a-b2ed-bd467fc857e7` | ditto | ditto |
 | _Root Verity Signature Partition (RISC-V 32-bit)_ | `3a112a75-8729-4380-b4cf-764d79934448` | ditto | ditto |
 | _Root Verity Signature Partition (RISC-V 64-bit)_ | `efe0f087-ea8d-4469-821a-4c2a96a8386a` | ditto | ditto |
-| _Root Verity Signature Partition (s390x)_ | `c80187a5-73a3-491a-901a-017c3fa953e9` | ditto | ditto |
 | _Root Verity Signature Partition (s390)_ | `3482388e-4254-435a-a241-766a065f9960` | ditto | ditto |
+| _Root Verity Signature Partition (s390x)_ | `c80187a5-73a3-491a-901a-017c3fa953e9` | ditto | ditto |
 | _Root Verity Signature Partition (TILE-Gx)_ | `b3671439-97b0-4a53-90f7-2d5a8f3ad47b` | ditto | ditto |
 | _Root Verity Signature Partition (amd64/x86_64)_ | `41092b05-9fc8-4523-994f-2def0408b176` | ditto | ditto |
 | _Root Verity Signature Partition (x86)_ | `5996fc05-109c-48de-808b-23fa0830b676` | ditto | ditto |
@@ -142,16 +142,16 @@ boot loader communicates this information to the OS, by implementing the
 | _`/usr/` Verity Signature Partition (64-bit ARM/AArch64)_ | `c23ce4ff-44bd-4b00-b2d4-b41b3419e02a` | ditto | ditto |
 | _`/usr/` Verity Signature Partition (Itanium/IA-64)_ | `8de58bc2-2a43-460d-b14e-a76e4a17b47f` | ditto | ditto |
 | _`/usr/` Verity Signature Partition (LoongArch 64-bit)_ | `b024f315-d330-444c-8461-44bbde524e99` | ditto | ditto |
-| _`/usr/` Verity Signature Partition (HPPA/PARISC)_ | `450dd7d1-3224-45ec-9cf2-a43a346d71ee` | ditto | ditto |
 | _`/usr/` Verity Signature Partition (32-bit MIPS LittleEndian (mipsel))_ | `3e23ca0b-a4bc-4b4e-8087-5ab6a26aa8a9` | ditto | ditto |
 | _`/usr/` Verity Signature Partition (64-bit MIPS LittleEndian (mips64el))_ | `f2c2c7ee-adcc-4351-b5c6-ee9816b66e16` | ditto | ditto |
+| _`/usr/` Verity Signature Partition (HPPA/PARISC)_ | `450dd7d1-3224-45ec-9cf2-a43a346d71ee` | ditto | ditto |
 | _`/usr/` Verity Signature Partition (64-bit PowerPC LittleEndian)_ | `c8bfbd1e-268e-4521-8bba-bf314c399557` | ditto | ditto |
 | _`/usr/` Verity Signature Partition (64-bit PowerPC BigEndian)_ | `0b888863-d7f8-4d9e-9766-239fce4d58af` | ditto | ditto |
 | _`/usr/` Verity Signature Partition (32-bit PowerPC)_ | `7007891d-d371-4a80-86a4-5cb875b9302e` | ditto | ditto |
 | _`/usr/` Verity Signature Partition (RISC-V 32-bit)_ | `c3836a13-3137-45ba-b583-b16c50fe5eb4` | ditto | ditto |
 | _`/usr/` Verity Signature Partition (RISC-V 64-bit)_ | `d2f9000a-7a18-453f-b5cd-4d32f77a7b32` | ditto | ditto |
-| _`/usr/` Verity Signature Partition (s390x)_ | `3f324816-667b-46ae-86ee-9b0c0c6c11b4` | ditto | ditto |
 | _`/usr/` Verity Signature Partition (s390)_ | `17440e4f-a8d0-467f-a46e-3912ae6ef2c5` | ditto | ditto |
+| _`/usr/` Verity Signature Partition (s390x)_ | `3f324816-667b-46ae-86ee-9b0c0c6c11b4` | ditto | ditto |
 | _`/usr/` Verity Signature Partition (TILE-Gx)_ | `4ede75e2-6ccc-4cc8-b9c7-70334b087510` | ditto | ditto |
 | _`/usr/` Verity Signature Partition (amd64/x86_64)_ | `e7bb33fb-06cf-4e81-8273-e543b413e2e2` | ditto | ditto |
 | _`/usr/` Verity Signature Partition (x86)_ | `974a71c0-de41-43c3-be5d-5c5ccd1ad2c0` | ditto | ditto |
diff --git a/src/systemd/sd-gpt.h b/src/systemd/sd-gpt.h
index 3527897c277..e369a0f4b5a 100644
--- a/src/systemd/sd-gpt.h
+++ b/src/systemd/sd-gpt.h
@@ -37,8 +37,8 @@ _SD_BEGIN_DECLARATIONS;
 #define SD_GPT_ROOT_PPC64_LE    SD_ID128_MAKE(c3,1c,45,e6,3f,39,41,2e,80,fb,48,09,c4,98,05,99)
 #define SD_GPT_ROOT_RISCV32     SD_ID128_MAKE(60,d5,a7,fe,8e,7d,43,5c,b7,14,3d,d8,16,21,44,e1)
 #define SD_GPT_ROOT_RISCV64     SD_ID128_MAKE(72,ec,70,a6,cf,74,40,e6,bd,49,4b,da,08,e8,f2,24)
-#define SD_GPT_ROOT_S390X       SD_ID128_MAKE(5e,ea,d9,a9,fe,09,4a,1e,a1,d7,52,0d,00,53,13,06)
 #define SD_GPT_ROOT_S390        SD_ID128_MAKE(08,a7,ac,ea,62,4c,4a,20,91,e8,6e,0f,a6,7d,23,f9)
+#define SD_GPT_ROOT_S390X       SD_ID128_MAKE(5e,ea,d9,a9,fe,09,4a,1e,a1,d7,52,0d,00,53,13,06)
 #define SD_GPT_ROOT_TILEGX      SD_ID128_MAKE(c5,0c,dd,70,38,62,4c,c3,90,e1,80,9a,8c,93,ee,2c)
 #define SD_GPT_ROOT_X86         SD_ID128_MAKE(44,47,95,40,f2,97,41,b2,9a,f7,d1,31,d5,f0,45,8a)
 #define SD_GPT_ROOT_X86_64      SD_ID128_MAKE(4f,68,bc,e3,e8,cd,4d,b1,96,e7,fb,ca,f9,84,b7,09)
@@ -56,8 +56,8 @@ _SD_BEGIN_DECLARATIONS;
 #define SD_GPT_USR_PPC64_LE     SD_ID128_MAKE(15,bb,03,af,77,e7,4d,4a,b1,2b,c0,d0,84,f7,49,1c)
 #define SD_GPT_USR_RISCV32      SD_ID128_MAKE(b9,33,fb,22,5c,3f,4f,91,af,90,e2,bb,0f,a5,07,02)
 #define SD_GPT_USR_RISCV64      SD_ID128_MAKE(be,ae,c3,4b,84,42,43,9b,a4,0b,98,43,81,ed,09,7d)
-#define SD_GPT_USR_S390X        SD_ID128_MAKE(8a,4f,57,70,50,aa,4e,d3,87,4a,99,b7,10,db,6f,ea)
 #define SD_GPT_USR_S390         SD_ID128_MAKE(cd,0f,86,9b,d0,fb,4c,a0,b1,41,9e,a8,7c,c7,8d,66)
+#define SD_GPT_USR_S390X        SD_ID128_MAKE(8a,4f,57,70,50,aa,4e,d3,87,4a,99,b7,10,db,6f,ea)
 #define SD_GPT_USR_TILEGX       SD_ID128_MAKE(55,49,70,29,c7,c1,44,cc,aa,39,81,5e,d1,55,86,30)
 #define SD_GPT_USR_X86          SD_ID128_MAKE(75,25,0d,76,8c,c6,45,8e,bd,66,bd,47,cc,81,a8,12)
 #define SD_GPT_USR_X86_64       SD_ID128_MAKE(84,84,68,0c,95,21,48,c6,9c,11,b0,72,06,56,f6,9e)
@@ -78,8 +78,8 @@ _SD_BEGIN_DECLARATIONS;
 #define SD_GPT_ROOT_PPC_VERITY         SD_ID128_MAKE(98,cf,e6,49,15,88,46,dc,b2,f0,ad,d1,47,42,49,25)
 #define SD_GPT_ROOT_RISCV32_VERITY     SD_ID128_MAKE(ae,02,53,be,11,67,40,07,ac,68,43,92,6c,14,c5,de)
 #define SD_GPT_ROOT_RISCV64_VERITY     SD_ID128_MAKE(b6,ed,55,82,44,0b,42,09,b8,da,5f,f7,c4,19,ea,3d)
-#define SD_GPT_ROOT_S390X_VERITY       SD_ID128_MAKE(b3,25,bf,be,c7,be,4a,b8,83,57,13,9e,65,2d,2f,6b)
 #define SD_GPT_ROOT_S390_VERITY        SD_ID128_MAKE(7a,c6,3b,47,b2,5c,46,3b,8d,f8,b4,a9,4e,6c,90,e1)
+#define SD_GPT_ROOT_S390X_VERITY       SD_ID128_MAKE(b3,25,bf,be,c7,be,4a,b8,83,57,13,9e,65,2d,2f,6b)
 #define SD_GPT_ROOT_TILEGX_VERITY      SD_ID128_MAKE(96,60,61,ec,28,e4,4b,2e,b4,a5,1f,0a,82,5a,1d,84)
 #define SD_GPT_ROOT_X86_64_VERITY      SD_ID128_MAKE(2c,73,57,ed,eb,d2,46,d9,ae,c1,23,d4,37,ec,2b,f5)
 #define SD_GPT_ROOT_X86_VERITY         SD_ID128_MAKE(d1,3c,5d,3b,b5,d1,42,2a,b2,9f,94,54,fd,c8,9d,76)
@@ -97,8 +97,8 @@ _SD_BEGIN_DECLARATIONS;
 #define SD_GPT_USR_PPC_VERITY          SD_ID128_MAKE(df,76,5d,00,27,0e,49,e5,bc,75,f4,7b,b2,11,8b,09)
 #define SD_GPT_USR_RISCV32_VERITY      SD_ID128_MAKE(cb,1e,e4,e3,8c,d0,41,36,a0,a4,aa,61,a3,2e,87,30)
 #define SD_GPT_USR_RISCV64_VERITY      SD_ID128_MAKE(8f,10,56,be,9b,05,47,c4,81,d6,be,53,12,8e,5b,54)
-#define SD_GPT_USR_S390X_VERITY        SD_ID128_MAKE(31,74,1c,c4,1a,2a,41,11,a5,81,e0,0b,44,7d,2d,06)
 #define SD_GPT_USR_S390_VERITY         SD_ID128_MAKE(b6,63,c6,18,e7,bc,4d,6d,90,aa,11,b7,56,bb,17,97)
+#define SD_GPT_USR_S390X_VERITY        SD_ID128_MAKE(31,74,1c,c4,1a,2a,41,11,a5,81,e0,0b,44,7d,2d,06)
 #define SD_GPT_USR_TILEGX_VERITY       SD_ID128_MAKE(2f,b4,bf,56,07,fa,42,da,81,32,6b,13,9f,20,26,ae)
 #define SD_GPT_USR_X86_64_VERITY       SD_ID128_MAKE(77,ff,5f,63,e7,b6,46,33,ac,f4,15,65,b8,64,c0,e6)
 #define SD_GPT_USR_X86_VERITY          SD_ID128_MAKE(8f,46,1b,0d,14,ee,4e,81,9a,a9,04,9b,6f,b9,7a,bd)
@@ -118,8 +118,8 @@ _SD_BEGIN_DECLARATIONS;
 #define SD_GPT_ROOT_PPC_VERITY_SIG         SD_ID128_MAKE(1b,31,b5,aa,ad,d9,46,3a,b2,ed,bd,46,7f,c8,57,e7)
 #define SD_GPT_ROOT_RISCV32_VERITY_SIG     SD_ID128_MAKE(3a,11,2a,75,87,29,43,80,b4,cf,76,4d,79,93,44,48)
 #define SD_GPT_ROOT_RISCV64_VERITY_SIG     SD_ID128_MAKE(ef,e0,f0,87,ea,8d,44,69,82,1a,4c,2a,96,a8,38,6a)
-#define SD_GPT_ROOT_S390X_VERITY_SIG       SD_ID128_MAKE(c8,01,87,a5,73,a3,49,1a,90,1a,01,7c,3f,a9,53,e9)
 #define SD_GPT_ROOT_S390_VERITY_SIG        SD_ID128_MAKE(34,82,38,8e,42,54,43,5a,a2,41,76,6a,06,5f,99,60)
+#define SD_GPT_ROOT_S390X_VERITY_SIG       SD_ID128_MAKE(c8,01,87,a5,73,a3,49,1a,90,1a,01,7c,3f,a9,53,e9)
 #define SD_GPT_ROOT_TILEGX_VERITY_SIG      SD_ID128_MAKE(b3,67,14,39,97,b0,4a,53,90,f7,2d,5a,8f,3a,d4,7b)
 #define SD_GPT_ROOT_X86_64_VERITY_SIG      SD_ID128_MAKE(41,09,2b,05,9f,c8,45,23,99,4f,2d,ef,04,08,b1,76)
 #define SD_GPT_ROOT_X86_VERITY_SIG         SD_ID128_MAKE(59,96,fc,05,10,9c,48,de,80,8b,23,fa,08,30,b6,76)
@@ -137,8 +137,8 @@ _SD_BEGIN_DECLARATIONS;
 #define SD_GPT_USR_PPC_VERITY_SIG          SD_ID128_MAKE(70,07,89,1d,d3,71,4a,80,86,a4,5c,b8,75,b9,30,2e)
 #define SD_GPT_USR_RISCV32_VERITY_SIG      SD_ID128_MAKE(c3,83,6a,13,31,37,45,ba,b5,83,b1,6c,50,fe,5e,b4)
 #define SD_GPT_USR_RISCV64_VERITY_SIG      SD_ID128_MAKE(d2,f9,00,0a,7a,18,45,3f,b5,cd,4d,32,f7,7a,7b,32)
-#define SD_GPT_USR_S390X_VERITY_SIG        SD_ID128_MAKE(3f,32,48,16,66,7b,46,ae,86,ee,9b,0c,0c,6c,11,b4)
 #define SD_GPT_USR_S390_VERITY_SIG         SD_ID128_MAKE(17,44,0e,4f,a8,d0,46,7f,a4,6e,39,12,ae,6e,f2,c5)
+#define SD_GPT_USR_S390X_VERITY_SIG        SD_ID128_MAKE(3f,32,48,16,66,7b,46,ae,86,ee,9b,0c,0c,6c,11,b4)
 #define SD_GPT_USR_TILEGX_VERITY_SIG       SD_ID128_MAKE(4e,de,75,e2,6c,cc,4c,c8,b9,c7,70,33,4b,08,75,10)
 #define SD_GPT_USR_X86_64_VERITY_SIG       SD_ID128_MAKE(e7,bb,33,fb,06,cf,4e,81,82,73,e5,43,b4,13,e2,e2)
 #define SD_GPT_USR_X86_VERITY_SIG          SD_ID128_MAKE(97,4a,71,c0,de,41,43,c3,be,5d,5c,5c,cd,1a,d2,c0)
@@ -253,6 +253,14 @@ _SD_BEGIN_DECLARATIONS;
 #  define SD_GPT_USR_NATIVE_VERITY SD_GPT_USR_RISCV64_VERITY
 #  define SD_GPT_USR_NATIVE_VERITY_SIG SD_GPT_USR_RISCV64_VERITY_SIG
 
+#elif defined(__s390__) && !defined(__s390x__)
+#  define SD_GPT_ROOT_NATIVE SD_GPT_ROOT_S390
+#  define SD_GPT_ROOT_NATIVE_VERITY SD_GPT_ROOT_S390_VERITY
+#  define SD_GPT_ROOT_NATIVE_VERITY_SIG SD_GPT_ROOT_S390_VERITY_SIG
+#  define SD_GPT_USR_NATIVE SD_GPT_USR_S390
+#  define SD_GPT_USR_NATIVE_VERITY SD_GPT_USR_S390_VERITY
+#  define SD_GPT_USR_NATIVE_VERITY_SIG SD_GPT_USR_S390_VERITY_SIG
+
 #elif defined(__s390x__)
 #  define SD_GPT_ROOT_NATIVE SD_GPT_ROOT_S390X
 #  define SD_GPT_ROOT_NATIVE_VERITY SD_GPT_ROOT_S390X_VERITY
@@ -261,14 +269,6 @@ _SD_BEGIN_DECLARATIONS;
 #  define SD_GPT_USR_NATIVE_VERITY SD_GPT_USR_S390X_VERITY
 #  define SD_GPT_USR_NATIVE_VERITY_SIG SD_GPT_USR_S390X_VERITY_SIG
 
-#elif defined(__s390__)
-#  define SD_GPT_ROOT_NATIVE SD_GPT_ROOT_S390
-#  define SD_GPT_ROOT_NATIVE_VERITY SD_GPT_ROOT_S390_VERITY
-#  define SD_GPT_ROOT_NATIVE_VERITY_SIG SD_GPT_ROOT_S390_VERITY_SIG
-#  define SD_GPT_USR_NATIVE SD_GPT_USR_S390
-#  define SD_GPT_USR_NATIVE_VERITY SD_GPT_USR_S390_VERITY
-#  define SD_GPT_USR_NATIVE_VERITY_SIG SD_GPT_USR_S390_VERITY_SIG
-
 #elif defined(__tilegx__)
 #  define SD_GPT_ROOT_NATIVE SD_GPT_ROOT_TILEGX
 #  define SD_GPT_ROOT_NATIVE_VERITY SD_GPT_ROOT_TILEGX_VERITY